About Us - Zhejiang CHBEST Power Technology Co., Ltd.

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Zhejiang CHBEST Power Technology Co., Ltd.

— Manufacturer of Power Distribution and Transmission Equipment —

Company Overview

Zhejiang CHBEST Power Technology Co., Ltd. is a specialized manufacturer of power distribution and transmission equipment, headquartered in Yueqing, Zhejiang Province -- China's premier electrical manufacturing hub. The company integrates research and development, manufacturing, and sales to provide comprehensive solutions for power systems across domestic and international markets.

Million

Registered Capital

Employees

Engineering & Technical Staff

Year

Established

Product Lines

Transformers

Oil-immersed transformers (up to 35kV), dry-type cast resin transformers, amorphous alloy transformers, and eco-friendly transformers.

Ring Main Units (RMU)

SF6 gas-insulated RMU, solid-insulated RMU, and eco-friendly gas-insulated RMU. Rated voltage: 12kV to 40.5kV.

Switchgear

High voltage and low voltage complete switchgear assemblies for power distribution systems.

Packaged Substations

European-style and American-style prefabricated compact substations, factory-assembled and tested.

New Energy Products

PV combiner boxes, DC distribution cabinets, and solar power integration equipment.

Components & Accessories

Cable distribution boxes, switching stations, and transformer accessories.

Manufacturing Capabilities

The company operates its own production facility in the Madaotou Industrial Zone, Yueqing. All core manufacturing processes -- including winding, core stacking, vacuum impregnation, assembly, and testing -- are conducted in-house, ensuring full control over production quality and delivery schedules.

Our engineering team comprises experienced professionals from the power automation industry. The company has achieved notable advancements in product miniaturization, environmental performance, and maintenance-free design across its product portfolio.

Every unit undergoes comprehensive testing before dispatch, including routine tests, type tests, and special tests in accordance with IEC standards. The factory is equipped with in-house testing facilities to support these procedures.

Applications & Markets

CHBEST products are deployed across five key sectors: power generation and transmission, renewable energy and photovoltaics, commercial and residential construction, heavy industry and manufacturing, and transportation infrastructure. The company serves domestic utilities, EPC contractors, and industrial end-users, and is actively expanding into Southeast Asia, the Middle East, and Africa.

Contact Information

Email: brian@chbpower.com
Phone: +86-13567794703
Website: www.chbpower.com
Address: No.18 Binjiangdadao Rd, Madaotou Industrial Zone, Yueqing, Zhejiang, China 325605

Quality Control

— Good Quality Comes From the Details —

Quality Management System

ISO 9001: 2015 certified quality management system covering all processes from design to delivery.
Full compliance with national GB standards and international IEC standards for power transmission equipment.

Dedicated QA/QC department operating independently from production, reporting directly to senior management.
Incoming Material Control

All raw materials — silicon steel, copper winding wire, insulating oil, epoxy resin, and switchgear components — sourced from qualified, audited suppliers only.
Mandatory incoming inspection for every material batch: dimensional checks, material certification, and sample testing before warehouse acceptance.
In-Process Quality Control

Stage-gate inspection at every critical manufacturing step: core stacking, winding assembly, vacuum drying, oil filling, and final assembly.
Real-time process monitoring with digital records — traceable to individual operator, machine, and material batch.

Non-conformance handling: any deviation triggers immediate quarantine, root cause analysis, and corrective action before resuming production.
Factory Testing & Inspection

Every unit undergoes mandatory routine testing before shipment: winding resistance, voltage ratio, insulation resistance, dielectric withstand, no-load and load loss measurement.
Type testing and special testing (temperature rise, short-circuit withstand, partial discharge) available per customer requirement with certified third-party witness.
Complete test reports issued with each shipment — not just a pass/fail, but full measurement data for your records.
Final Inspection & Pre-Shipment

100% visual and dimensional check before packaging — surface finish, nameplate accuracy, accessory completeness.
Random pre-shipment inspection by independent QA team simulating customer receiving conditions.
Packaging conformity check: crate integrity, moisture protection, shipping marks, and documentation completeness.

Certifications & Compliance

CHBEST products are designed, manufactured, and tested in full compliance with national and international standards. Our certifications provide independent verification of quality, safety, and performance — giving you confidence in every shipment.

Management System Certifications

ISO 9001:2015 — Quality Management System. Certified by accredited third-party body. Covers design, manufacturing, testing, sales, and after-sales service.

ISO 14001:2015 — Environmental Management System. Demonstrates commitment to environmental responsibility across production operations.

ISO 45001:2018 — Occupational Health & Safety Management System. Ensures safe working conditions and continuous improvement in workplace safety.

Quality Assurance Documentation

Every shipment includes: Factory Test Report (routine tests), Material Certificates, Certificate of Conformity, and Operation & Maintenance Manual.

Full traceability: each unit carries a unique serial number linked to its complete production and testing history.

Documentation available in English, Chinese, or bilingual format as required.

Product Standards Compliance

GB Standards (China National Standards) — All products comply with applicable GB/T and GB standards, including GB 1094 (Power Transformers), GB/T 6451 (Oil-immersed Transformers), GB/T 10228 (Dry-type Transformers), and GB 3906 (HV Switchgear).

IEC Standards (International Electrotechnical Commission) — Products designed and tested to IEC 60076 (Transformers), IEC 62271 (Switchgear), and IEC 61439 (Low-voltage Switchgear Assemblies) for international market compatibility.

Type Test Certificates — Full type testing completed at nationally accredited testing laboratories (KEMA-type or equivalent). Type test reports are available for all major product series.

Export Compliance & Market Access

Products can be supplied with compliance documentation for target markets, including CE marking (EU), GOST (Eurasia), SASO (Saudi Arabia), and other regional certification requirements upon request.

All export shipments accompanied by Certificate of Origin (Form E / Form F for ASEAN and FTA partners), factory test reports, and material certificates.

Third-party inspection accepted — SGS, Bureau Veritas, TUV, and other international inspection agencies welcome for pre-shipment verification.